11540820 has 24 divisors (see below), whose sum is σ = 32314464. Its totient is φ = 3077536.

The previous prime is 11540791. The next prime is 11540827. The reversal of 11540820 is 2804511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11540827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96114 + ... + 96233.

It is an arithmetic number, because the mean of its divisors is an integer number (1346436).

Almost surely, 2^11540820 is an apocalyptic number.

11540820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11540820 is an abundant number, since it is smaller than the sum of its proper divisors (20773644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11540820 is a wasteful number, since it uses less digits than its factorization.

11540820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192359 (or 192357 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 11540820 is about 3397.1782408346. The cubic root of 11540820 is about 225.9846231739.

The spelling of 11540820 in words is "eleven million, five hundred forty thousand, eight hundred twenty".